P. Roberts

Forecasting freight demand

P. Roberts, 1977 .

Federal Port Policy in the United States

Paul O Roberts, Henry S Marcus, J. C. Kuypers, 1976 .

ENGINEERING OF LOCATION: THE SELECTION AND EVALUATION OF TRIAL GRADE LINES BY AN ELECTRONIC DIGITAL COMPUTER

John H Suhrbier, Paul O Roberts, J. Suhrbier, 1965 .